On the smaller side the 92102 zip code encompasses 4.6 sq. miles and borders the 5 highway to the west and claims the land all the way to Euclid Ave to the east. Imperials Ave. is the boundary to the south. The northern boundaries of the zip code claim the south east corner of Balboa Park and the canyon ridges it follows to the north can best be seen on a map. Estimated zip code population in 2016 was 45,420. The 92102 zip code consists of neighborhoods South Park, Golden Hill, Grant Hill, Mount Hope, Hilltop, Chollas View, Chollas Creek and Ridgeview Webster. There is a high percentage of rental units 73%.